leffacement
Leffacement is not a standard term in English lexicography. In most contexts it appears to be a misspelling or typographical variant of effacement, a noun derived from the verb erase. Because there is no independently established definition, leffacement does not have a recognized, discipline-specific sense in dictionaries or scholarly usage.
If encountered, the intended meaning is typically the same as effacement. The word's etymology traces to French
Effacement, the standard form, has multiple senses. In obstetrics, cervical effacement refers to thinning and shortening
In published material, if leffacement appears without clarification, readers should treat it as a probable misspelling